Burner-nozzle and connection therefor.



G. E. LUCE.

BURNER NOZZLE AND CONNECTION THEREFOR. APPLICATION FILED MAR. 20. 1915.

1 ,286,039. Patented Nov. 26, 1918.

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BURNER NOZZLE AND CONNECTION THEREFOR.

APPLICATION FILED MAR. 20. I915.

Patented Nov. 26, 1918.

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BURNER NOZZLE AND CONNECTION THEREFOR.

APPLICATION FILED MAR- 20. l9l5- 1,286,039. Patented Nov. 26, 1918.

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Wit/wwea 17206/2607 WJQM GRAFTON E. LUCE, OF CHICAGO, ILLINOIS,ASSIGNOR, BY MESNE ASSIGNMENTS, TO CHARLES A. BROWN, OF HINSDALE,ILLINOIS.

BURNER-NOZZLE AND CONNECTION THEREFOR.

Specification of Letters Patent.

Patented Nov. 26, 1918.

Application filed March 20, 1915. -Seria1No. 15,784.

To all whom it may concern:

Be it known that I, GRAFTON E. LUCE, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Burner-Nozzles andConnections Therefor, of which the following is a full, clear, concise,and exact description, reference being had to the accompanying drawings,forming a part of this specification.

The present invention resides in an improved burner nozzle andconnection therefor. The nozzle herein described is particularly adaptedfor use in carrying out processes for burning brick wherein the burnernozzle is employed during the first part'of the operation for atomizingand projecting a spray of oil into the furnace spaces, that is, thearches of the kiln and is thereafter employed in conjunction withinduction pipes for injecting steam and air or other elastic fluid intothe kiln.

While I have stated that the invention is adapted to this particularpurpose; I do not thereby intend to limit the invention to such useonlyas I am aware that it is capable of use in numerous other situations andrelations for performing its functions.

The object of the present invention is to provide an improved burnernozzle. A further object is the provision of improved connection betweenthe stationary main and the nozzle whereby adjustment and control of thenozzle may be facilitated. In the accompanying drawings which form apart of the present specification,

. Figure 1 is an isometric view of the burner nozzle and connection.

Fig. 2 isa similar view of the inner end of the induction pipe used inconnection with the nozzle.

Fig. 3 is a longitudinal section of the burner nozzle,

Fig. 4 is a front elevation, and

Fig. 5 is a vertical cross-section on the line 5, 5, of Fig. 3.

The nozzlel is connected to the oil pipe 2 and to the steam pipe 3 bymeans of flexible tubes, 4 and 5, respectively. These tubes may be ofsolid material, flexible in nature, or may be, as illustrated, made fromspirally wound flexible tubing such as is Well known in the trade. Theconnection of the oil pipe 2 with the nozzle is governed by an anglevalve 6 which is connected by a short nipple 7 to a plate-or pedestal 8,attached to the top of the oil pipe by means of U-bolts 9. The plate 8has a passage therethrough which communicates with an opening in the 011pipe to allow delivery of the oil to the burner nozzle. The steam pipe'3is connected to the burner nozzle by a similar angle valve andconnection pipe and the flexible tubes 4 and 5 are each provided attheir ends with couplings, preferably threaded, to secure them to theangle valve and to the burner nozzle. The nozzle 1 is provided with asteam inlet extension 10 and an oil inlet extension 11 which extensionsproject therefrom substantially at right angles to the axis of theburner. These extensions are connected by means of street elbows t0 theflexible pipes 5 and 4. The oil pipe 2 and the steam pipe 3 may besecured in any fixed relation as by means of the clamps 12 to preventdisplacement during installation of the burner before the arches of abrick kiln. The flexible tubes 4 and 5 are made of suflicient length toallow considerable adjustment of the burner nozzle 1 in a lateraldirection. Due to the elbow connection between these flexible pipes andthe burner nozzle, the nozzle may be pointed at different angles bymerely turning the same on the screw threads joining the elbow with thenozzle. Vertical adjustment of the burner may be secured bybodilylifting the same or by blocking up the nozzle to the desiredheight. In the operation of burning bricks the nozzle is first used toatomize the oil to burn the same and is thereafter used to inject steamand air into the kiln by blowing through the induction pipe, the end ofwhich is shown in Fig. 2. It can be seenthat the flexible tubes 4 and 5allow the nozzle to be raised out of the way so that the induction tube13 may be inserted in the arch of the kiln before which the burner 1 wasformerly located.

After the induction pipe 13 is put in place the nozzle 1 is lowered andis allowed to rest in the yoke 14 so that the opening in the nozzle issubstantially axial with the induction tube 13. The particularconstruction of the burner nozzle is shown in Figs. 3, 4 and 5. Thenozzle comprises essentially a steam projecting nozzle and an oilprojecting nozzle combined co-axially into a single structure. Thecasing 15 is hollowed out'to form a front steam space 16 and a rearspace 17 and in between these two spaces, which are communicating, thereis formed the oil space 18. The wall separating these spaces is piercedaxially to allow the introduction of the stem 19 of the needle valveproper. The stem 19 has an axial passage 20 communicating by means ofcross-passages 21 with the rear steam space 17. The stem 19 termi; natesat its outer end in a conicalor trun cate tip 22 which for convenienceof manufacture is made separate from the stem 19 and is thereaftersecured to the stem 19 as by means of screw threads. The conical tip 22has a continuation of the axial passage 20 so that steam from thechamber 17 may pass through the openings 21 and 20 out through the endor tip 22 to the atmosphere, this passage being always open. The steamspace 17 and the oil space 18 are maintained separate by means of theasbestos packing 23 contained in the counterbore of the casing, Thispacking isheld in place by means of a threaded nut 24 which may beremoved by means of a spanner wrench or the like. The rear end of thesteam space 17 is closed by means of a packing 25 secured between thenut 26 and the nipple 27 which, for convenience in manufacture, ismounted upon a separate part 28 and so that access may readily be had tothe packing 23. The stem 19 is provided at its rear end with the handwheel 29 and at its front end it is screwvthreaded into the nozzle orjet 30 which is secured to the wall between the steam space 16 and theoil space 18. The conical tip 22 on the stem 19 cooperates with theouter end of the jet 30 to form a needle valve for the oil entering fromthe oil extension 11. The threaded portion of the stem 19 has a numberof longitudinal grooves 31 cut therein to allow the passage of oil fromthe space 18 to the space between the tip 22 and the-jet 30. The oilpasses out between the tip 22 and the jet 30 in an annular orcylindrical spray, its velocity depending upon the. velocity with whichthe jet is operating. The front end of the casing 15 has an open hollowend into which is screw-threaded the nozzle 32 which cooperates with thejet 30 to define a passage for steam from the space 16 to the outside.The nozzle 32 is provided with projecting cars 33 serving to adjust thesame and to indicate the adjustment made.

A look nut 34 serves to maintain the setting of the nozzle 32. The steampassage 20 is always open and the steam thereto is controlled only bythe angle valve 6 in the connection between the nozzle and the steammain.

The passage between the jet 30 and the nozzle 32 can be adjusted byturning the nozzle 32 so as to screw the same in the desired direction.The amount of oil discharged is reac es controlled by the adjustment ofthe stem 19 whereby the passage between the jet 30 and the conical tip22 is increased or decreased. It will be noted that the stem 19 issupported as near as possible to the end which forms the needle valve soas to secure certainty and reliability of action and to preventeccentricity of the needle valve. After the screw threads have been usedfor some time they tendto become slightly worn. In devices of the priorart where the spindle is supported from the rear end, the wearing of thethreads has produced eccentricity of the passageway and unsatisfactoryoperation of the [burner nozzle. The nozzle is made so that it can veryreadily be taken apart for cleaning or for renewing the packing. It willbe noted that the central spindle 19 is reduced at its inner endso thatthe spindle may be readily withdrawn through the packings 23 j and 2-5without catching on the same. When the steam passage between the nozzle32 and the jet 30 is cut ofi' the oil issuing from the burner nozzle isprojected more nearly in a straight line in a longer or thinner flame.When thesteam passage between the nozzle .32 and the jet 30 is openv thesteam forms an outer'envelop around the oil space which tends to breakup the same into finer particles and project the same in greater volumelaterally along the-path. The outer envelop of steam issuing between thenozzle 32 and forming a large volume of flame adjacent the burner. It isto be noted that during the normal operation of atomizing oil forburning the same that the tip 22 of the spindle 19 projects through thejet 30 and beyond the nozzle 32 so that the steam pressure from thechamber 16 does not create a back pres sure tending to prevent flow ofthe oil. When the nozzle is employed for blowing air and steam throughthe induction tube 13 the 011 passage is shut off by closing the needlevalve and also by closing the valve 6 in the connection between theburner jet and the 011 supply mam. It can then be seen that steam onlywill issue from the nozzle and will act as an ejector forcing air andsteam through the induction tube 13.

As above explained the passage 20 is open at alltimes and is controlledonly by the angle valve 6 in the steam connection. The passage betweenthe jet 30 and the nozzle 32 may be controlled by rotation of the nozzle32 so that more or less steam is dis charged from this passage. Theamount of oil discharged is, as above explained, controlled by theneedle valve.

While ll have described my invention in connection with the specificdetails of a particular embodiment, I do not intend thereby that theinvention should be construed as bein limited to any of these detailsexcept as t e same may appear in the appended claims. It is obvious tothose skilled in the art that numerous modifications and variations maybe made without departing from the spirit and scope of the invention.

What I claim as new and desire to secure by Letters Patent is asfollows:

1. In combination, a pair of supply mains comprising a feed pipe and anoil pipe lying parallel to each other and in a horizontal plane, aburner nozzle lying at substantially right angles to said supply mains,a vertical pipe nipple for each of said mains, angle valves havingvertical valve stems connected to said nipples, pipe elbows joined tosaid nozzle and flexible metallic tubes connecting said elbows and saidvalves, said elbows joining said nozzle on opposite sides.

2. In combination, a burner shell having a rear and forward steamchamber and an oil chamber between them, and a needle valve having acentral axial passage for steam from the rear steam chamber, packingmeans engaging said valve between'said rear steam chamber and the oilchamber, a jet providing a co-axial passage for oil,

said valve controlling said oil passage, said valve being supported inits central position in said jet at the nozzle side of the oil chamber,said shell having a passageway exterior of said jet for said other steamchamber.

3. In combination a burner nozzle casing having two steam chambers andone oil chamber therein, a central splndle through said chambers, saidspindle having an axial 49 hole communicating with one steam cham ber,a-threaded support for said spindle, a

conical tip adjacent the threaded part,

jet cooperating with said tip to form a two steam chambers and an oilchamberv therebetween, a central spindle passing through said chambers,said spindle having an axial hole communicating with one of said steamchambers, a threaded support for said spindle, a conical tip adjacentthe threaded part, a jet coo erating with said tip to form a valve, saidspindle having grooves communicating with said oil space and the spacebetween the tip and the jet, a nozzle surroundlng the jet andcommunicating with the. other steam chamber, said nozzle beingrelatively adjustable with rethreaded portion and packing means enga ingsaid portion of larger diameter.

11 witness whereof, I hereunto subscribe my name this 6 dayzof March, A.D. 1915.

G AFTON E. LUCE. I Witnesses:

ERNEST W. -RAPALEE, I GILBERT C. SAMUELSEN.

- spect to said-jet to control the size of the I

